Underground Tanks

Dura-Tech fiberglass underground tanks are built for applications where storage needs to be placed below grade to save space, protect the tank from site activity, or support a cleaner above-ground layout. These tanks are a practical choice for industrial sites, commercial facilities, utility systems, emergency water supply, water collection, and other storage applications where durable underground containment is required.

All Dura-Tech fiberglass tanks are rust-proof, lightweight, and extremely durable. They are manufactured using premium resin with a combination of fiberglass chopped strand and woven glass products, giving them the strength and corrosion resistance needed for demanding underground storage environments.

Fiberglass is especially well suited for underground tanks because it will not rust like steel and can be built to support long-term use in wet, corrosive, or buried conditions. For facilities that need reliable water or liquid storage without taking up valuable surface space, an underground fiberglass tank can provide a durable, low-maintenance solution.

Dura-Tech can work with your team to build underground tanks around your project requirements, including tank size, storage volume, resin selection, fittings, access points, manway extensions, anchoring requirements, site conditions, and installation needs. Tanks are easy to transport, and Dura-Tech can also deliver and install them for you.

Tanks can be tested before and after installation, helping your team confirm that the tank is ready for service and properly suited to the application.

Best for:

  • Underground industrial storage
  • Emergency water supply
  • Sprinkler reservoir systems
  • Rainwater and water collection systems
  • Utility and service water storage
  • Campgrounds and resorts
  • Commercial and residential water storage
  • Livestock feeding stations
  • Sites with limited above-ground space
  • Applications requiring corrosion-resistant buried tanks

Why fiberglass underground tanks?

Fiberglass is a strong material choice for underground storage because it is rust-proof, corrosion-resistant, lightweight, and durable. Underground tanks are exposed to moisture, soil conditions, groundwater, and changing environmental conditions, so material selection matters.

Unlike steel tanks, fiberglass tanks do not rust. This can reduce long-term maintenance concerns and help extend service life in buried applications. Fiberglass is also lighter than many traditional tank materials, which can make transportation, handling, and installation more efficient.

Underground tanks are useful when a site needs storage capacity without adding more above-ground equipment. They can help preserve usable space, reduce visual impact, and support applications where water or liquid storage needs to be integrated into the site layout.

For projects involving water storage, industrial liquids, environmental conditions, or specific site restrictions, Dura-Tech can work with your team to review resin selection, fittings, access, anchoring, installation, and testing requirements.

 


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Dura-Tech fiberglass transport tank with center drain and lifting hardware mounted on truck bed

Complete your fiberglass tank system

Dura-Tech offers accessories for both aquaculture and industrial fiberglass tanks, including covers, fittings, sumps, insulation, manways, vents, heating systems, ladders, platforms, gauges, and custom components.